Edmund Mortimer (1376-1409)

Edmund Mortimer (10 December 1376-1409) was an English nobleman. He was captured by Owain Glyndwr during his Welsh revolt, only to marry his daughter Catrin ferch Owain Glyndwr.

Biography
Edmund Mortimer was born in Ludlow Castle, Shropshire, England in 1376, the son of Edmund Mortimer, 3rd Earl of March and the brother of Roger Mortimer, 4th Earl of March and Elizabeth Mortimer. He supported his cousin Henry Bolingbroke during his rise to power in 1399, and he became regent for his nephew, Edmund Mortimer, 5th Earl of March after Roger was slain in a skirmish in Ireland. In 1402, Mortimer and his half-brother Henry Percy fought against Owain Glyndwr's uprising in Wales, but Mortimer was betrayed by his Welsh troops and captured by the English. It was rumored that Mortimer had voluntarily joined the rebels, so King Henry IV of England refused to ransom Mortimer, leading to the House of Percy rebelling. Mortimer married Owain's daughter Catrin ferc Owain Glyndwr and proclaimed his intent to make his nephew, Edmund, the new King of England, rebelling alongside the Percys in 1403. The Percys were slain at the Battle of Shrewsbury, and Mortimer was reduced to great distress as Glyndwr's uprising faltered. In 1409, he died during Henry V of England's siege of Harlech Castle.